causes of false positive urine pregnancy test
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Medications That Cause False Positive Pregnancy TestsLast updated on Oct 29, 2012by Dr. Christine Lee, MD Given the fact that any pregnancy test displays its results based on accurate measurement of the Human Chorionic Gonadotropin (hCG) hormone level, undergoing treatment with HCG injections causes a false rise in the hCG found in the urine and thus a false positive result.
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- Blood or protein in the urine may cause false-positive pregnancy results. Urine hCG tests may give a false-negative result if the urine is too diluted or if testing is done too soon in the pregnancy. Certain drugs such as diuretics and promethazine (an antihistamine) may cause false-negative urine results.
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What You Need to Know About False Pregnancy Test Results Unfortunately, many women have a small amount of this hormone continuously and if the level gets high enough just before a period, you could get a false pregnancy test result. The best time to use a urine test for pregnancy is three to five days after your missed period.
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Drugs That Can Cause False Positive Drug Tests A common diabetes medication, metformin (Glucophage), can lead to a false-positive result for amphetamines. Further Considerations Whether taking a drug will actually cause you to have a false-positive urine drug test will depend on various factors, including the amount of the drug you are taking, when you took the last dose and the exact type of urine drug test used.
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Can Zoloft cause a false positive pregnancy test? HPTs look for a hormone (hcg) that your body produces only when pregnant. There are a few fertility medications that can cause a positive HPT because they contain hcg, but when you're on those meds, you're generally told not to take an HPT because of the potential for false positives.
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- False Negatives. Even after waiting until the week after a missed period, some women still feel the symptoms of early pregnancy, but rely on the test's results. If your test reads negative, but you still experience nausea, tenderness in the breasts and frequent urination, call your doctor. There may be a simple answer.
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Can lortabs and xanax make a drug test positive? Antibiotics Cause False Positives on Heroin Tests. Among the items reported as causing false positive test results are: Pain relievers such as Advil, Nuprin, Motrin and menstrual cramp medications like Midol and Trendar. All drugs containing the widely used pain reliever Ibuprofen are known to cause positive samples for Marijuana.
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Medications That Cause False Positive Pregnancy TestsLast updated on Oct 29, 2012by Dr. Christine Lee, MD Many medications can affect your test results, so find out which to make sure you are aware of this possibility. A woman looking to have a baby can go through frustrating times when she discovers on the home pregnancy test a false positive result. Unlike blood pregnancy tests, urine pregnancy tests can display false positive results on account of a number of medications which interfere with the accurate result. Also, incorrect usage of the urine test can lead to false positive or false negative results, too. Claim Your 20 Free Pregnancy Tests – Click Here. The main 6 types of medications that cause false positive pregnancy tests results are as follows.
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- In very rare cases, you can have a false-positive result. This means you're not pregnant but the test says you are. You could have a false-positive result if blood or protein is present in your urine. And certain drugs, such as tranquilizers, anti-convulsants, or hypnotics, may also cause false-positive results.
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- Wait a few days and take another test. It's possible you got a false negative, or you just don't have enough of the pregnancy hormone in your urine to show up positive. The ho…rmone doubles each day, so if you are still experiencing pregnancy symptoms in 5-10 days, take another test.
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Is It Possible to Get a False Positive Pregnancy Test Result? Home pregnancy tests are pretty reliable -- in fact, most of them can detect a pregnancy with 97 percent accuracy as early as the day after you miss your menstrual period. The tests work by indicating whether or not there's a pregnancy hormone called human chorionic gonadotropin (hCG) in your urine.
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- The lower the number, the more sensitive the test, and the earlier it can detect pregnancy. If you test too soon in pregnancy, even with a sensitive test, the amount of hCG in your urine may not be high enough to detect. Getting a false negative, when a test that says you're not pregnant and you are, can be stressful.
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Medications That Cause False Positive Pregnancy TestsLast updated on Oct 29, 2012by Dr. Christine Lee, MD Medications That Cause False Positive Pregnancy Tests on Oct 29, 2012. by Dr. Christine Lee, MD. Rate this Article: VN:F [1.9.20_1166] please wait... When trying to get pregnant, a false positive prgnancy test can be incredibly disheartening.
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- High urine glucose levels may be a sign of undiagnosed diabetes that is already present in the mother or gestational diabetes, a form of diabetes that can develop during pregnancy. A positive urine test for glucose will usually be followed by a confirmatory blood glucose test, which is also routinely used to screen for gestational diabetes during the second trimester (between 24 and 28 weeks of pregnancy).
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5 Reasons for a False Positive Pregnancy Test False Positive Pregnancy Test. If you've taken a home pregnancy test and get two lines (or a plus sign depending on the brand and type of test), you assume this means you are pregnant. After all, home pregnancy tests claim an accuracy rate of over 99%.
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False Positive Pregnancy Test ResultsLast updated on Aug 27, 2012by Monica Scott This scenario often occurs in women undergoing fertility treatments which contain hCG, such as hCG shots. The hormone in the drugs may cause the test to read a false positive. To avoid this- ensure that you have allowed enough time for the shot to be completely out of your system before using a pregnancy test. If you are unsure, retest a week or two later and/ or see your doctor for medical advice and testing.
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- 1 Drinking too much fluid before taking a home pregnancy test might cause a false-negative result. 2  For the most accurate results, take the test first thing in the morning — when your urine is the most concentrated.
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False Positive Pregnancy Test Result and Phantom HCG 1 Fertility treatment: If you receive shots of hCG or gonadotropins (for example, Pregynl, Profasi, Pergonal, APL) for ovulation it's posible to have a positive urine or blood pregnancy test for two to three weeks after the shot and not be pregnant. The most important though very rare false positive blood test is a woman who has a low positive blood pregnancy test, the urine test is negative, and she is not pregnant. 2  Defective Pregnancy Test-Expired tests or faulty home pregnancy tests can also lead to false positive results.
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How pregnancy tests work Simply open the test, place the tip under your urine flow, and wait for the recommended amount of time to view the results. A negative result may be false if the test is taken too early in your cycle. False positives are rare and can indicate a defective test. Here are some signs that you should take a pregnancy test.
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The Best Pregnancy Test It's possible to get a negative result from a home pregnancy test when you're actually pregnant. This is known as a false-negative — and it's much more likely to occur than is a false-positive. You might get a false-negative if you: 1  Take the test too early. The earlier after a missed period that you take a home pregnancy test, the harder it is for the test to detect HCG. 2  Check test results too soon. Be sure to give the test time to work. 3  Use diluted urine.
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5 Reasons for a False Positive Pregnancy Test If you receive a positive result from a home pregnancy test, it is important to follow up with your doctor for medical care. Although it is not common, certain rare medical conditions can cause positive results on a home pregnancy test.
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could I have a false positive pregnancy test? could I have a false positive pregnancy test? I took two pregnancy tests after 6 days of my missed period and both were very positive, however I've heard that ovarian cysts can cause faint positive pregnancy tests. I'm 16(yes please don't judge my age.
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5 Reasons for a False Positive Pregnancy Test Improper testing can lead to false positive results. When taking a home pregnancy test, it is very important to read the directions before testing. Your home pregnancy test instructions will specify when test results should be interpreted and when test results are no longer valid.
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Medications That Cause False Positive Pregnancy Tests False positive pregnancy tests can result from use of certain medications. False positive results are uncommon on pregnancy tests; false negatives are much more common. Certain medications can cause a false positive result on blood test or home pregnancy tests.
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The In Vitro Fertilization (IVF) Process: The Embryo Transfer & Pregnancy Testing As tempting as it is, fertility patients are advised not to use home pregnancy tests. Home pregnancy tests can render false results for fertility patients, either negative or positive. A false positive can result because hCG is given to “trigger” ovulation and may remain in the blood and a home pregnancy test cannot determine the difference between the two.